Electric headrest

Abstract

The present disclosure provides an electric headrest including: an oil damper which has a storing part in which oil is stored, and a rotary shaft coupled to the top of the storing part and having a first saw-toothed part protruding from the outer peripheral surface of the rotary shaft; a center cover that is formed in the center of the rear of a headrest pad and in which the oil damper is coupled to the inside of a hinge coupling part; and a side cover coupled to the center cover at the side of the center cover by the hinge coupling part, and having a second saw-toothed part formed at a position corresponding to the first saw-toothed part of the oil damper.

The invention claimed is: 
     
       1. An electric headrest comprising:
 a center cover provided on a headrest pad and having on a side thereof a hinge coupling part; 
 an oil damper coupled to an inside of the hinge coupling part of the center cover, the oil damper comprising:
 a storing part configured to store oil therein, and 
 a rotary shaft coupled to a top of the storing part and having a first saw-toothed part protruding from an outer peripheral surface of the rotary shaft; and 
 
 a side cover coupled to the center cover at the side of the center cover by the hinge coupling part, and having a second saw-toothed part formed at a position corresponding to the first saw-toothed part of the oil damper. 
 
     
     
       2. The electric headrest according to  claim 1 , wherein the storing part has a disc shape with a predetermined height, and fixing parts protrude from both sides of the storing part. 
     
     
       3. The electric headrest according to  claim 1 , wherein a fan is coupled to an end of the rotary shaft in the storing part, and the fan is rotated by the rotary shaft as the hinge coupling part rotates. 
     
     
       4. The electric headrest according to  claim 1 , wherein the oil damper is coupled to and supported by a guide that is separately formed. 
     
     
       5. The electric headrest according to  claim 1 , wherein the rotary shaft of the oil damper is rotatably coupled with the hinge coupling part. 
     
     
       6. The electric headrest according to  claim 1 , wherein the second saw-toothed part is vertically formed on an inside of the hinge coupling part of the side cover.